package com.wxservice.serviceimpl;

import com.alibaba.fastjson.JSONObject;
import com.wxservice.domain.request.BatchgetMediaREQ;
import com.wxservice.domain.request.UpLoadMediaREQ;
import com.wxservice.domain.request.AllMediaREQ;
import com.wxservice.domain.response.ErrorMsgRES;
import com.wxservice.service.MediaService;
import com.wxservice.util.CommonUtil;
import com.wxservice.util.ErrorUtil;

import org.springframework.stereotype.Service;

import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;

@Service
public class MediaServiceImpl implements MediaService {


    @Override
    public String insertMedia(UpLoadMediaREQ upLoadMediaREQ) throws Exception {
        String fanhuizhi = JSONObject.toJSONString(new ErrorMsgRES(-2, "请输入正确的信息."));
        String action = "https://api.weixin.qq.com/cgi-bin/material/add_material?access_token=ACCESS_TOKEN&type=TYPE";
        action = action.replace("ACCESS_TOKEN", upLoadMediaREQ.getAccess_token());
        action = action.replace("TYPE", upLoadMediaREQ.getType());
        URL url = new URL(action);
        String result = null;
        File file = new File(upLoadMediaREQ.getPath());
        if (!file.exists() || !file.isFile()) {
            throw new IOException("上传的文件不存在");
        }
        HttpURLConnection con = (HttpURLConnection) url.openConnection();
        con.setDoInput(true);
        con.setDoOutput(true);
        con.setUseCaches(false); // post方式不能使用缓存
        con.setRequestMethod("POST"); // 以Post方式提交表单，默认get方式

        // 设置请求头信息
        con.setRequestProperty("Connection", "Keep-Alive");
        con.setRequestProperty("Charset", "UTF-8");
        // 设置边界
        String BOUNDARY = "----------" + System.currentTimeMillis();
        con.setRequestProperty("Content-Type", "multipart/form-data; boundary="
                + BOUNDARY);
        // 请求正文信息
        // 第一部分：
        StringBuilder sb = new StringBuilder();
        sb.append("--"); // 必须多两道线
        sb.append(BOUNDARY);
        sb.append("\r\n");
        sb.append("Content-Disposition: form-data;name=\"media\";filename=\""
                + file.getName() + "\"\r\n");
        sb.append("Content-Type:application/octet-stream\r\n\r\n");
        byte[] head = sb.toString().getBytes("utf-8");
        // 获得输出流
        OutputStream out = new DataOutputStream(con.getOutputStream());
        // 输出表头
        out.write(head);
        // 文件正文部分
        // 把文件已流文件的方式 推入到url中
        DataInputStream in = new DataInputStream(new FileInputStream(file));
        int bytes = 0;
        byte[] bufferOut = new byte[1024];
        while ((bytes = in.read(bufferOut)) != -1) {
            out.write(bufferOut, 0, bytes);
        }
        in.close();
        // 结尾部分
        byte[] foot = ("\r\n--" + BOUNDARY + "--\r\n").getBytes("utf-8");// 定义最后数据分隔线
        out.write(foot);
        out.flush();
        out.close();
        StringBuffer buffer = new StringBuffer();
        BufferedReader reader = null;
        try {
            // 定义BufferedReader输入流来读取URL的响应
            reader = new BufferedReader(new InputStreamReader(
                    con.getInputStream()));
            String line = null;
            while ((line = reader.readLine()) != null) {
                buffer.append(line);
            }
            if (result == null) {
                result = buffer.toString();
            }
        } catch (IOException e) {
            System.out.println("发送POST请求出现异常！" + e);
            e.printStackTrace();
            throw new IOException("数据读取异常");
        } finally {
            if (reader != null) {
                reader.close();
            }
        }
        JSONObject jsonObject = JSONObject.parseObject(result);
        if (null != jsonObject && (!jsonObject.containsKey("errcode"))) {
            fanhuizhi = jsonObject.toString();
        } else if (null != jsonObject && jsonObject.containsKey("errcode")) {
            fanhuizhi = ErrorUtil.errorConversion(jsonObject);
        }
        return fanhuizhi;
    }

    @Override
    public String listMedia(BatchgetMediaREQ batchgetMediaREQ) {
        String jsonString = JSONObject.toJSONString(batchgetMediaREQ);
        // 拼接请求地址
        String requestUrl = "https://api.weixin.qq.com/cgi-bin/material/batchget_material?access_token=ACCESS_TOKEN";
        requestUrl = requestUrl.replace("ACCESS_TOKEN", batchgetMediaREQ.getAccess_token());

        // 返回值
        JSONObject jsonObject = CommonUtil.httpsRequest(requestUrl, "POST", jsonString);
        String result = "failure";
        if (null != jsonObject && (!jsonObject.containsKey("errcode"))) {
            result = jsonObject.toString();
        }else if(null != jsonObject && jsonObject.containsKey("errcode")){
            result =ErrorUtil.errorConversion(jsonObject);
        }
        return result;
    }

    @Override
    public String deleteMedia(AllMediaREQ allMediaREQ) {
        String jsonString = JSONObject.toJSONString(allMediaREQ);
        // 拼接请求地址
        String requestUrl = "https://api.weixin.qq.com/cgi-bin/material/del_material?access_token=ACCESS_TOKEN";
        requestUrl = requestUrl.replace("ACCESS_TOKEN", allMediaREQ.getAccess_token());

        // 返回值
        JSONObject jsonObject = CommonUtil.httpsRequest(requestUrl, "POST", jsonString);
        String result = "failure";
        if (null != jsonObject && (!jsonObject.containsKey("errcode"))) {
            result = jsonObject.toString();
        }else if(null != jsonObject && jsonObject.containsKey("errcode")){
            result =ErrorUtil.errorConversion(jsonObject);
        }
        return result;
    }

}
